{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Asthma research has been greatly facilitated by the introduction of fibreoptic bronchoscopy which is now a commonly used technique in the field of respiratory disease research , allowing collection of biopsy specimens , bronchial brushing samples , and bronchoalveolar lavage fluid enabling use of disease - derived cells and tissues in some of these models ."}
{"Chemical": []}